Surface area of square pyramid 4 inch base and 3 inches high

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.